'89 740 Belching Black Smoke

  • Thread starter Thread starter Kirk Grau
  • Start date Start date
K

Kirk Grau

OK I have been helped her before. My non-turbo 740 was belching black smoke
a while back and I was able to remedy things by cleaning up the contacts at
the air mass meter. At least I thought I had. The last few days the
symptoms are appearing again and my fix is not working this time. Where can
I be looking next.

Thanks,

Kirk
 
OK I have been helped her before. My non-turbo 740 was belching black smoke
a while back and I was able to remedy things by cleaning up the contacts at
the air mass meter. At least I thought I had. The last few days the
symptoms are appearing again and my fix is not working this time. Where can
I be looking next.

Thanks,

Kirk
Click to expand...
Check the vacuum hose at the fuel pressure regulator. If it has fuel in
it, replace the regulator.

Bob
 
Check the vacuum hose at the fuel pressure regulator. If it has fuel in
it, replace the regulator.

Bob
Click to expand...

Replacing my O2 sensor fixed that problem for me.

blurp
 
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